It may have been a toasty 90 degrees just last week in Los Angeles, but at Walt Disney Animation Studios’ Hollywood premiere for Frozen, winter arrived a bit early.

Featuring the voices of Kristen Bell, Idina Menzel, Jonathan Groff, Josh Gad and Santino Fontana, the animated film follows a girl named Anna (Bell) as she journeys through a winter wonderland to find her kidnapped sister and free her kingdom from eternal winter.

The premiere at the El Capitan Theatre on Tuesday featured a snow-coated white carpet, a castle half buried in fluffy white "snow" and an ice sculpture of the snowman Olaf -- a character voiced by Gad in the movie.

On the sparkling white carpet, the cast shared their fondest winter memories.

“I grew up in Detroit, which was very, very cold," said Bell. "We were often snowed in so I would always push to have sleepovers during the week so that I could have my friends there and going out, making snowmen and getting off school."

“My family would go skiing in the north ridge up in Tahoe in California, where I was born. I always love that. I miss that,” said Fontana, who gives voice to Hans, a charming friend to Anna.

Gad's favorite winter memory also involved his family. When he was working on Broadway's TheBook of Mormon, he lived in an apartment building where he could go up to the roof.

"I took my daughter and my wife up and we saw the Macy’s Thanksgiving Day parade from this rooftop. It was so magical because it was like we were having our own little picnic with the Macy’s parade all to ourselves. It was really beautiful,” Gad told THR.

Gad, who worked with the songwriter of Frozen, Robert Lopez, on Book of Mormon, also spoke to THR about his experience of singing the big musical number "In Summer" for the movie.

“They wrote such a gem for me," he said. "Getting my own song in a Disney film while playing a Disney sidekick, I wasn’t gonna let that opportunity get away, so I worked and worked and worked on it, and I was struck by how fun and brilliant the song was."

Along with the castmembers who celebrated the winter fairy-tale film, which is loosely based on Hans Christian Andersen's The Snow Queen, several other celebrities attended with their families. Among them were Marcia Gay Harden, Demi Lovato (sporting blue hair), Kendra Wilkinson, Scott Wolf, Melissa Joan Hart and chief creative officer of Walt Disney and Pixar Animation Studios John Lasseter, who wore his signature aloha shirt.

Fontana told THR that the biggest challenge of working in animation "is that you have no idea what it’s gonna look like."

“Any acting in front of a camera or on stage, you have to be aware of the whole arc, the whole through line, whereas in animation the script is constantly changing, so you are really only responsible for that scene. That’s a huge difference and a huge weight off your shoulders. You don’t have to get something right, because it’s going to change and they are going to edit it, so that’s great,” added Fontana.